Bhagavad Gita Chapter 04, Text 33

Bg 4.33

sreyan dravya-mayad yajnaj
jnana-yajnah paran-tapa
sarvam karmakhilam partha
jnane parisamapyate

Word for word: 
sreyan — greater; dravya-mayat — of material possessions; yajnat — than the sacrifice; jnana-yajnah — sacrifice in knowledge; param-tapa — O chastiser of the enemy; sarvam — all; karma — activities; akhilam — in totality; partha — O son of Prtha; jnane — in knowledge; parisamapyate — end.

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O chastiser of the enemy, the sacrifice performed in knowledge is better than the mere sacrifice of material possessions. After all, O son of Prtha, all sacrifices of work culminate in transcendental knowledge.

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The purpose of all sacrifices is to arrive at the status of complete knowledge, then to gain release from material miseries and, ultimately, to engage in loving transcendental service to the Supreme Lord (Krishna consciousness). Nonetheless, there is a mystery about all these different activities of sacrifice, and one should know this mystery. Sacrifices sometimes take different forms according to the particular faith of the performer. When one’s faith reaches the stage of transcendental knowledge, the performer of sacrifices should be considered more advanced than those who simply sacrifice material possessions without such knowledge, for without attainment of knowledge, sacrifices remain on the material platform and bestow no spiritual benefit. Real knowledge culminates in Krishna consciousness, the highest stage of transcendental knowledge. Without the elevation of knowledge, sacrifices are simply material activities. When, however, they are elevated to the level of transcendental knowledge, all such activities enter onto the spiritual platform. Depending on differences in consciousness, sacrificial activities are sometimes called karma-kanda (fruitive activities) and sometimes jnana-kanda (knowledge in the pursuit of truth). It is better when the end is knowledge.