In this Age of Kali, most of the population is foolish and not adequately educated to understand Vedanta philosophy; the best purpose of Vedanta philosophy is served by inoffensively chanting the holy name of the Lord. Vedanta is the last word in Vedic wisdom, and the author and knower of the Vedanta philosophy is Lord Krishna; and the highest Vedantist is the great soul who takes pleasure in chanting the holy name of the Lord. That is the ultimate purpose of all Vedic mysticism. – His Divine Grace A. C. Bhaktivedanta Swami Prabhupada Bhagavad-gita As It Is 2.46, Purport

Those who are eager to awaken their spiritual consciousness and who thus have unflinching, undeviated intelligence certainly attain the desired goal of life very soon. – Sri Caitanya Mahaprabhu,Sri Caitanya-Caritamrta, Madhya-lila 24.170 (quoted from the Naradiya Purana)

For one whose mind is unbridled, selfrealization is difficult work. But he whose mind is controlled and who strives by appropriate means is assured of success. That is My opinion. – Lord Sri Krishna Bhagavad-gita 6.36

If one is unhappy to see the distress of other living beings and happy to see their happiness, his religious principles are appreciated as imperishable by exalted persons who are considered pious and benevolent. – Dadhici Muni, Srimad-Bhagavatam 6.10.9

In happiness and distress, in good fortune or in bad everywhere the auspicious hand of the Lord is present. In this mood everyone should give up illusion and turn towards the service of the Supreme Lord. As a result, at some auspicious moment the necessity of praying for the mercy of the Lord may arise in the minds of the living entities. – Srila Bhakti Siddhanta Sarasvati Thakura Commentary on Sri Caitanya-Bhagavata, adi-khanda 14.185

O Radha, service to Tulasi gives the greatest piety, the greatest good fortune, and the greatest benediction. It gives Lord Krishna’s association. – Sri Candranana Sri Garga-samhita 2.16.2

The atma is called all-pervading (sarvagatah) because it accepts all types of bodies, such as that of man, devata, bird, and beast, one after another, according to karma. The atma also possesses a fixed form (sthanuh) and fixed qualities (acalah). – Srila Baladeva Vidyabhusana Commentary on Bhagavad-gita 2.24