To be engaged in opposing wrong affords...but a slender guarantee for being right.

Be thorough in all you do; and remember that although ignorance often may be innocent, pretension is always despicable.

No one ever became great except through many and great mistakes.

Books are delightful society. If you go into a room and find it full of books - even without taking them from the shelves they seem to speak to you, to bid you welcome.

My only hope for the world is in bringing the human mind into contact with divine revelation.

Thrift of time will repay you in after-life with a thousandfold of profit beyond your most sanguine dreams.

It is difficult to see anything but infatuation in the destructive temperament which leads to the action ... that each of us is to rejoice that our several units are to be distinguished at death into countless millions of organisms; for such, it seems, is the latest revelation delivered from the fragile tripod of a modern Delphi.