Arise! Awake! and stop not until the goal is reached.

Prison life, fortunately, I spent a lot of years, about 18 years with other prisoners, and, as I say, they enrich your soul.

I will prepare and some day my chance will come.

It is a man's own mind, not his enemy or foe, that lures him to evil ways

If we are not free, no one will respect us.

If we open a quarrel between past and present, we shall find that we have lost the future. 

Failure is simply the opportunity to begin again, this time more intelligently. 

As we advance in life we learn the limits of our abilities.  

Physical comforts cannot subdue mental suffering, and if we look closely, we can see that those who have many possessions are not necessarily happy. In fact, being wealthy often brings even more anxiety.

Isn't it strange that I who have written only unpopular books should be such a popular fellow?

There is nothing like returning to a place that remains unchanged to find the ways in which you yourself have altered.

Intelligence is the application of knowledge.