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.
Fyodor DostoevskyPerhaps a normal man is supposed to be stupid-how do we know? Perhaps it's even very beautiful.
Fyodor Dostoevsky[to Jesus] You did not come down from the cross when they shouted to you, mocking and reviling you: "Come down from the cross and we will believe that it is you." You did not come down because, again, you did not want to enslave man by a miracle and thirsted for faith that is free, not miraculous...I swear, man is created weaker and baser than you thought him! How, how can he ever accomplish the same things as you? ...Respecting him less, you would have demanded less of him, and that would be closer to love, for his burden would be lighter.
Fyodor Dostoevsky