By the experience of active love. Strive to love your neighbour actively and indefatigably. In as far as you advance in love you will grow surer of the reality of God and of the immortality of your soul. If you attain to perfect self-forgetfulness in the love of your neighbour, then you will believe without doubt, and no doubt can possibly enter your soul. This has been tried. This is certain.

Even there, in the mines, underground, I may find a human heart in another convict and murderer by my side, and I may make friends with him, for even there one may live and love and suffer. One may thaw and revive a frozen heart in that convict, one may wait upon him for years, and at last bring up from the dark depths a lofty soul, a feeling, suffering creature; one may bring forth an angel, create a hero! There are so many of them, hundreds of them, and we are all to blame for them. [...] If they drive God from the earth, we shall shelter Him underground.

Grown-up people do not know that a child can give exceedingly good advice even in the most difficult case.

Thus, as a result of heightened consciousness, a man feels as if it's all right if he's bad as long as he knows it- as though that were any consolation.

And you're sorry that the ephemeral beauty has faded so rapidly, so irretrievably, that it flashed so deceptively and pointlessly before your eyes - you're sorry, for you didn't even have time to fall in love.

From a hundred rabbits you can't make a horse.

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