Time lost can never be retrieved. Time cannot be hoarded, only spent well.

Vision involves optimism and hope. The pessimist sees difficulty in every opportunity. The optimist sees opportunity in every difficulty. The pessimist tends to hold back people of vision from pushing ahead.

The person who sees the difficulties so clearly that he does not discern the possibilities cannot inspire a vision in others.

If we are meticulously careful with the use of the days, the years will take care of themselves.

Time lost can never be retrieved. Time cannot be hoarded, only spent well.

Disciples [deep people] are not manufactured wholesale. They are produced one by one, because someone has taken the pains to discipline, to instruct and enlighten, to nurture and train one that is younger.

Fatigue is the price of leadership. Mediocrity is the price of never getting tired.