Be isolated, be ignored, be attacked, be in doubt, be frightened, but do not be silenced.

Unless a man has been taught what to do with success after getting it, the achievement of it must inevitably leave him a prey to boredom.

When it was first proposed to establish laboratories at Cambridge, Todhunter, the mathematician, objected that it was unnecessary for students to see experiments performed, since the results could be vouched for by their teachers, all of them of the highest character, and many of them clergymen of the Church of England.

Love is a slippery eel that bites like hell

As soon as we abandon our own reason, and are content to rely upon authority, there is no end to our troubles.

Education ought to foster the wish for truth, not the conviction that some particular creed is the truth.

To think I have spent my life on absolute muck.