Endless are the doctrines

अनन्तशास्त्रं बहुलाश्च विद्याः स्वल्पश्च कालो बहवश्च विघ्नाः ।
यत्सारभूतं तदुपासनीयं हंसो यथा क्षीरमिवाम्बुमध्यात्॥
anantaśāstraṃ bahulāśca vidyāḥ svalpaśca kālo bahavaśca vighnāḥ ।
yatsārabhūtaṃ tadupāsanīyaṃ haṃso yathā kṣīramivāmbumadhyāt॥
Endless are the doctrines; countless are the teachings; time is limited, and obstacles are many. Hence, one should obtain only the essence from everything, leaving out the rest, just as the royal swan takes the essence from the milk, leaving out the water.
– cāṇakyanītidarpaṇa