"Those people who have got wisdom are very lucky people, but wisdom comes from no source but your own understanding of life. When a person starts thinking, "Why am I doing such and such thing ? What is the effect of my doing ? What is the result of my behaviour ? Is it good for me or bad for me ? " , then wisdom comes."

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Whenever I start thinking of my love for a person, I am in the habit of immediately drawing radii from my love - from my heart, from the tender nucleus of a personal matter- to monstrously remote points of the universe. Something impels me to measure the consciousness of my love against such unimaginable and incalculable things as the behaviour of nebulae (whose very remoteness seems a form of insanity), the dreadful pitfalls of eternity, the unknowledgeable beyond the unknown, the helplessness, the cold, the sickening involutions and interpenetrations of space and time.

— Vladimir Nabokov