How good life is when one does something good and just!

The man who is happy is fulfilling the purpose of existence

And do you know, do you know that mankind can live without the Englishman, it can live without Germany, it can live only too well without the Russian man, it can live without science, without bread, and it only cannot live without beauty, for then there would be nothing at all to do in the world! The whole secret is here, the whole of history is here. Science itself would not stand for a minute without beauty

One's own free and unfettered volition, one's own caprice, however wild, one's own fancy, inflamed sometimes to the point of madness - that is the one best and greatest good, which is never taken into consideration because it cannot fit into any classification and the omission of which sends all systems and theories to the devil.

There is no subject so old that something new cannot be said about it.

Man has not the right to turn aside and heed not what is happening in the world around him, and this I maintain on moral grounds of the highest order.

A man who lies to himself, and believes his own lies, becomes unable to recognize truth, either in himself or in anyone else, and he ends up losing respect for himself and for others.