Sankaracarya's Vivekachudamani 398

शवाकारं यावद्भजति मनुजस्तावदशुचिः

परेभ्यः स्यात्क्लेशो जननमरणव्याधिनिलयः ।

यदात्मानं शुद्धं कलयति शिवाकारमचलम्

तदा तेभ्यो मुक्तो भवति हि तदाह श्रुतिरपि ॥

śavākāraṃ yāvadbhajati manujastāvadaśuciḥ

parebhyaḥ syātkleśo jananamaraṇavyādhinilayaḥ |

yadātmānaṃ śuddhaṃ kalayati śivākāramacalam

tadā tebhyo mukto bhavati hi tadāha śrutirapi ||

(Sankaracarya's Vivekachudamani 398)

As long as one worships one‘s corpse-like body, one is impure and suffers from 'others' and from birth, death and disease. But when one thinks of oneself as the Pure, the Auspicious, the Immovable, certainly one becomes free from them—the Srutis also testify to this.

Hindu superstition was that Hindus don't preach. The source of this idea may be the mistaken but popular notion that all paths are equal and eventually lead to the same destination. Lord Krishna clearly refutes this misconception in the Bhagavad-gita (9.25)

What can be more beneficial than knowing who we are, who God is, what this world is, how we must act for success in life, and so on?

Those who determine to offer profuse ritualistic ablations in honor of the ancestors go to Pitriloka the realm of the ancestors. Those who undertake to worship demons, ghosts, and spirits go to the realms of the respective elemental spirits of those invoked. But those who with devotion judiciously offer all propitiation and worship to the Supreme Lord Krishna who exists inside as paramatma the supreme soul and whose transcendental body comprises all of the demigods attain the Supreme Lord eternally. The votaries of the demigods share the joys of the heavenly kingdoms for an allotted time and then they fall down but those who direct their rituals, ceremonies, and worship to the Supreme Lord. Who is without beginning, without end. Who is omniscient, omnipresent, omnipotent and infallible. Who is a vast ocean of multitudinous attributes and infinite glories? Who is measureless bliss personified and from whom once attaining there is no return to the worlds of mortals. Next will be given another distinguishing characteristic of Lord Krishna's devotees.