Human beings are born into this little span of life of which the best thing is its friendships and intimacies … and yet they leave their friendships and intimacies with no cultivation, to grow as they will by the roadside, expecting them to "keep" by force of mere inertia.
William JamesOut of time we cut 'days' and 'nights', 'summers' and 'winters.' We say what, each part of the sensible continuum is, and all these abstract whats are concepts. The intelletual life of man consists almost wholly in his substitution of a conceptual order for the persceptual order in which his experience originally comes.
William James