It is an uphill task to reform one's tendencies and character. You may
have the best of the vegetables and the most capable cook, but
if the copper vessel in which you prepare the vegetable soup is not
tinned, the concoction you cook will be highly poisonous! So,
"tin" your heart with Sathya, Dharma, Shanthi, Prema (Truth,
Right Conduct, Peace and Divine Love), it will then become a vessel
fit for repeating holy name and worshipping the Lord.
- Sathya Sai Speaks, Vol
5,
Ch 1, Jan 1965.