All progress is gained through mistakes and their rectification. No good comes fully fashoned, out of God’s hand, but has to be carved out through repeated experiments and repeated failures by ourselves. This is the law of individual growth. The same law controls social and political evolution also. The right to err, which means the freedom to try experiments, is the universal condition of all progress.

Mohandas Gandhi (1869-1948) Indian philosopher and nationalist [Mahatma Gandhi]

M. K. Gandhi: Speeches and Writings (1918)