Oh there are so many... how to choose.
This morning I was listening to Dravida Prabhu's narration of the Bhagavad-gita As It Is audio book, Chapters 2 and 3. In just ten minutes I dashed over to the computer several times to write down interesting quotes I heard. There's so much nectar in the Bhagavad-gita, every sentence, every verse, every purport...
"The Krishna conscious person is concerned only with the satisfaction of Krishna, and nothing else." - BG 2.64, purport
"Unless one is Krishna conscious, there is no possibility of peace." - BG 2.66, purport.
"Unless all of the senses are engaged in the service of the Lord, even one of them engaged in sense gratification can deviate the devotee from the path of transcendental advancement. As mentioned in the life of Maharaja Ambarisha, all of the senses must be engaged in Krishna consciousness, for that is the correct technique for controlling the mind." - BG 2.67, purport.
"One can curb the forces of sense gratification only by means of Krishna consciousness, or engaging all the senses in the transcendental loving service of the Lord." BG 2.68, purport.
"The devotees of Krishna have no material desires, and therefore they are in perfect peace." BG 2.70, purport.
"Because Krishna is the proprietor of everything, everything must be used for the satisfaction of Krishna." BG 2.71, purport.
"There is no difference between the kingdom of God and the devotional service of the Lord. .. In the material world there are activities of sense gratification, whereas in the spiritual world there are activities of Krishna consciousness. .. One who is situated in Krishna consciousness has certainly already entered into the kingdom of God." BG 2.72, purport.
"Nothing should be performed for sense gratification, but everything should be done for the satisfaction of Krishna." BG 3.9, purport.