There is no nobler deed than the performance of one's duty.
Mental stamina - determination - is a quality of the mind shattered by fatigue.But physical stamina - endurance - is built upon fatigue.
In the absence of fear, there can be no courage.
True love is impossible for those to whom principles mean little.
Rights are subordinate to responsibilities.
Endurance cannot be produced by determination alone; endurance is a product of physical exercise.