The effect of education

Regard man as a mine rich in gems of inestimable value. Education can, alone, cause it to reveal its treasures, and enable mankind to benefit therefrom. 
(Baha’u’llah, ‘Gleanings from the Writings of Baha’u’llah’; Ruhi Book 3)

Detachment “from the world and the vanities thereof”

Detachment is as the sun; in whatsoever heart it doth shine it quencheth the fire of covetousness and self. He whose sight is illumined with the light of understanding will assuredly detach himself from the world and the vanities thereof.

(Baha’u’llah, ‘The Baha’i World 1926-1928; Ruhi Book 2)

“…let your heart burn with loving-kindness…”

Do not be content with showing friendship in words alone; let your heart burn with loving-kindness for all who may cross your path. 

(‘Abdu’l-Baha, ‘Paris Talks’; Ruhi Book 1)

During consultation not to voice one’s opinion as correct and right…

…consultation must have for its object the investigation of truth. He who expresses an opinion should not voice it as correct and right but set it forth as a contribution to the consensus of opinion… 

(‘Abdu’l-Baha, from a talk, Chicago, 2 May 1912; ‘The Promulgation of Universal Peace: Talks Delivered by 'Abdu'l-Bahá during His Visit to the United States and Canada in 1912’)

Not to make religion the “cause of enmity or dissension”

O ye that dwell on earth! The religion of God is for love and unity; make it not the cause of enmity or dissension. 

(Baha’u’llah, ‘Tablets of Baha’u’llah revealed after the Kitab-i-Aqdas’; Ruhi Book 8)