Honesty, sincerity, simplicity, humility, pure generosity, absence of vanity, readiness to serve others – qualities which are within easy reach of every soul – are the foundations of one’s spiritual life. Development in matters of this nature is inconceivable without serious introspection, without knowing yourself, your weaknesses and mistakes. At least, if for nothing else, the cell gives you the opportunity to look daily into your entire conduct, to overcome the bad and develop whatever is good in you. Regular meditation, say about 15 minutes a day before you turn in, can be very fruitful in this regard. You may find it difficult at first to pinpoint the negative features in your life, but the 10th attempt may yield rich rewards. Never forget that a saint is a sinner who keeps on trying.

– Nelson Mandela