Mental strength

Expressions researched:
"strength of his mind" |"strength of mind" |"strength of the mind" |"strength of your mind"

SB Canto 1

It is the duty of a mendicant (parivrājakācārya) to experience all varieties of God's creation by traveling alone through all forests, hills, towns, villages, etc., to gain faith in God and strength of mind as well as to enlighten the inhabitants with the message of God.

SB 1.6.13, Purport:

It is the duty of a mendicant (parivrājakācārya) to experience all varieties of God's creation by traveling alone through all forests, hills, towns, villages, etc., to gain faith in God and strength of mind as well as to enlighten the inhabitants with the message of God. A sannyāsī is duty-bound to take all these risks without fear, and the most typical sannyāsī of the present age is Lord Caitanya, who traveled in the same manner through the central Indian jungles, enlightening even the tigers, bears, snakes, deer, elephants and many other jungle animals. In this age of Kali, sannyāsa is forbidden for ordinary men. One who changes his dress to make propaganda is a different man from the original ideal sannyāsī. One should, however, take the vow to stop social intercourse completely and devote life exclusively to the service of the Lord. The change of dress is only a formality.

SB Canto 2

The Lord can be served by all the senses, or even simply by the mind. The South Indian brāhmaṇa who served the Lord simply on the strength of his mind also factually realized the Lord.

SB 2.9.36, Purport:

The Lord can be served by all the senses, or even simply by the mind. The South Indian brāhmaṇa who served the Lord simply on the strength of his mind also factually realized the Lord. Success is guaranteed for a devotee who fully engages any one of his senses in the mode of devotional service. The Lord can be served by any ingredient, even the most common commodity—a flower, a leaf, a fruit or a little water, which are available in any part of the universe and without cost—and thus the Lord is served universally by the universal entities. He can be served simply by hearing, He can be served simply by chanting or reading about His activities, He can be served simply by adoring Him and accepting Him.