Abstract terms (however useful they may be in argument) should be discarded in meditation, and the mind should be fixed on the particular and the con… - George Berkeley

I entirely agree with you, as to the ill tendency of the affected doubts of some philosophers, and fantastical conceit of others. I am even so far gone of late in this way of think, that I have quitted several of the sublime notions I had got in their schools for vulgar opinions. And I give it you on my word, since this revolt from metaphysical notions to the plain dictates of nature and common sense, I find my understanding strangely enlightened, so that I can now easily comprehend a great many thing which before were all mystery and riddle.

Truth is the cry of all, but the game of the few.

For no one's authority ought to rank so high as to set a value on his words and terms even though nothing clear and determinate lies behind them.