In the social jungle of human existence, there is no feeling of being alive without a sense of identity.
The whole conviction of my life now rests upon the belief that loneliness, far from being a rare and curious phenomenon, peculiar to myself and to a few other solitary men, is the central and inevitable fact of human existence.
Love is the only sane and satisfactory answer to the problem of human existence.
Without contraries is no progression. Attraction and repulsion, reason and energy, love and hate, are necessary to human existence.
As far as I am concerned, LGBT can only stand for leprosy, gonorrhea, bacteria, and tuberculosis, all of which are detrimental to human existence.
A century ago, petroleum - what we call oil - was just an obscure commodity; today it is almost as vital to human existence as water.
Cultivation of mind should be the ultimate aim of human existence.
The arts, as a reflection of human existence at its highest, have always and spontaneously lived up to this demand of plenitude. No mature style of art in any culture has ever been simple.
The basic fact about human existence is not that it is a tragedy, but that it is a bore. It is not so much a war as an endless standing in line.
Progress is measured by richness and intensity of experience - by a wider and deeper apprehension of the significance and scope of human existence.