For one human being to love another: that is perhaps the most difficult of all our tasks, the ultimate, the last test and proof, the work for which all other work is but preparation.
Love is a high inducement to the individual to ripen, to become something in himself, to become world for himself for another’s sake, it is a great exacting claim upon him, something that chooses him out and calls him to vast things.
Only someone who is ready for everything, who doesn’t exclude any experience, even the most incomprehensible, will live the relationship with another person as something alive and will himself sound the depths of his own being.
The necessary thing is after all but this; solitude, great inner solitude. Going into oneself for hours meeting no one - this one must be able to attain.