It is as fatal as it is cowardly to blink facts because they are not to our taste. - John Tyndall

History is the record of a vast experimental investigation—of a search by man after the best conditions of existence.

Life is a wave, which in no two consecutive moments of its existence is composed of the same particles.

We ought not to judge superior men without reference to the spirit of their age. This is an influence from which they cannot escape, and so far as it extenuates their errors it ought to be pleaded in their favour.