But man, because he has only one life to live, cannot conduct experiments to test whether to follow his passion (compassion) or not.

You do an experiment because your own philosophy makes you want to know the result. It’s too hard, and life is too short, to spend your time doing something because someone else has said it’s important. You must feel the thing yourself…

It is often said that experiments should be made without preconceived ideas. That is impossible. Not only would it make every experiment fruitless, but even if we wished to do so, it could not be done. Every man has his own conception of the world, and this he cannot so easily lay aside. We must, for example, use language, and our language is necessarily steeped in preconceived ideas.

In relation to man and his society, experiment can not dangle on void. It must belong. Belong to man.

It is impossible to control experiments which are conducted among subjects undergoing the continual chaotic conditioning of normal life. Unconditioned subjects do not exist, and the conditioned ones are not uniformly so. If such tests reveal intellectual inferiority in women we could discount them, but in any case they do not.

لا يُمكن للإنسان أبدًا أن يُدرك ماذا عليه أن يفعل، لأنه لا يملك إلا حياة واحدة، لا يسعه مقارنتها بحيوات سابقة ولا إصلاحها في حيوات لاحقة.

El hombre nunca puede saber qué debe querer, porque vive sólo una vida y no tiene modo de compararla con sus vidas precedentes ni de enmendarla en sus vidas posteriores.

Those experiments that cannot be justified on scientific grounds can be no more justified than the frivolous killing and torturing of animals. In fact they are even less capable of justification, since such experiments block more fruitful uses of scientific resources.

No amount of experimentation can ever prove me right; a single experiment can prove me wrong.

One's tendency when one is young is to do experiments just to see what will happen, without really looking for specific things at all. I first set up a little laboratory in the attic at home just to grow crystals or try experiments described in books, such as adding a lot of concentrated sulfuric acid to the blood from a nosebleed which precipitates hemotin from the hemoglobin in the blood. That was quite a nice experiment. I still remember it.

As an experimental psychologist, I have been trained not to believe anything unless it can be demonstrated in the laboratory on rats or sophomores.

[W]ithout proper experiments I conclude nothing...

We must never make experiments to confirm our ideas, but simply to control them.

El hombre nunca sabe qué debe querer, porque vive sólo una vida y no tiene modo de compararla con sus vidas precedentes ni de enmendarla con sus vidas posteriores.