Pain is inevitable. Suffering is optional.
If you want to be incrementally better: Be competitive. If you want to be exponentially better: Be cooperative.
If you seek to understand the whole universe you will understand nothing at all but seek to understand yourself and you will understand the whole universe.
Life is like a 1,000 page book. You want to quit halfway through, but then you realise you have a lot left to look forward to.
Socrates learned to dance when he was seventy because he felt that an essential part of himself had been neglected.