Patanjali's yoga sutras

प्रमाणविपर्ययविकल्पनिद्रास्मृतय
pramāṇa viparyaya vikalpa nidrā smr̥taya

pramāṇa = knowledge
viparyaya = misconceptions
vikalpa = imagination
nidrā = sleep
smr̥taya = memories

1.7 प्रत्यक्षानुमानागमाः प्रमाणानि
pratyakṣa-anumāna-āgamāḥ pramāṇāni

pratyakṣa = perception via the five senses
anumāna = inference; reflection
āgamāḥ = sacred works
pramāṇāni = means of attaining knowledge of the truth

The means of attaining knowledge of the truth include sacred works, inference and reflection, and perception via the five senses. 

Where can we find evidence of Oneness? Sacred texts are a great place to start, but it’s written into the patterns of the universe. You can see it in the beauty of nature, in sunrises and sunsets, the moon and the stars, mountains and oceans, and the ones you love. If you are a parent, you know what it’s like to see through the eyes of God. If you’ve ever had a dog, you know what it’s like to be seen through the eyes of God. In the light of Loving Awareness, the divinity of all things is revealed. Anything you can perceive through your five senses can be made holy in this way.