Intelligence is derived from two words - inter and legere - inter meaning 'between' and legere meaning 'to choose'. An intelligent person, therefore, is one who has learned 'to choose between'. He knows that good is better than evil, that confidence should supersede fear, that love is superior to hate, that gentleness is better than cruelty, forbearance than intolerance, compassion than arrogance, and that truth has more virtue than ignorance.
Speculative joy, the joy derived from being right and being rewarded, may well be similar to the rush felt by a winning gambler.
The word tulip is derived from a Persian word called delband, which means turban. It is generally believed that it was called this due to the turban-shaped nature of the flower. However, this might have been a translation error as it was fashionable to wear tulips on turbans at the time.
I do transcendental meditation, which is, I suppose, derived from Vedic or Ayurvedic principles, which is sort of Hindu principles.